My LM96163 config and status list below, but the LM96163 alert pin always is high. Could any body tell me why ? Thank you in advance.
1. 03H register bit2 is 1 (enables the TACH input)
2. 49H_48H register config value is 500 (tachometer limit)
3. Tachometer Count more than 4000, which is read from 47H_46H
4. alert status, 02H register value is 0x09, mean that a tach alarm was generated
5. 16H register is 0xa4, tach alarm enable
